﻿using CSharpPro1._1023;

namespace CSharpPro1
{
    using CSharpPro1._1030;

    class Program
    {
        static  void Main(string[] args)
        {
            //alt+enter补全快捷键
            Demo demo = new  Demo();
            // demo.Id = 10;
            Father father = new Father();
            father.Print(); 
            Child child = new  Child();
            child.Print();
            demo.D();
        }
        
    }
}